diff --git a/lib/memory.js b/lib/memory.js
index 841af22..fa19b0f 100644
--- a/lib/memory.js
+++ b/lib/memory.js
@@ -93,17 +93,30 @@ const OSX_RAM_manufacturers = {
 
 // /procs/meminfo - sample (all in kB)
 //
-// MemTotal:       32806380 kB
-// MemFree:        19220948 kB
-// MemAvailable:   20851100 kB
-// Buffers:          532892 kB
-// Cached:          1935000 kB
-// SwapCached:            0 kB
-// Active:         11953672 kB
-// Inactive:        1069288 kB
-// SwapTotal:      16768892 kB
-// SwapFree:       16768892 kB
-
+// MemTotal: 32806380 kB
+// MemFree: 17977744 kB
+// MemAvailable: 19768972 kB
+// Buffers: 517028 kB
+// Cached: 2161876 kB
+// SwapCached: 456 kB
+// Active: 12081176 kB
+// Inactive: 2164616 kB
+// Active(anon): 10832884 kB
+// Inactive(anon): 1477272 kB
+// Active(file): 1248292 kB
+// Inactive(file): 687344 kB
+// Unevictable: 0 kB
+// Mlocked: 0 kB
+// SwapTotal: 16768892 kB
+// SwapFree: 16768304 kB
+// Dirty: 268 kB
+// Writeback: 0 kB
+// AnonPages: 11568832 kB
+// Mapped: 719992 kB
+// Shmem: 743272 kB
+// Slab: 335716 kB
+// SReclaimable: 256364 kB
+// SUnreclaim: 79352 kB
 
 function mem(callback) {
 
@@ -117,6 +130,9 @@ function mem(callback) {
 
         active: os.totalmem() - os.freemem(),     // temporarily (fallback)
         available: os.freemem(),                  // temporarily (fallback)
+        buffers: 0,
+        cache: 0,
+        slab: 0,
         buffcache: 0,
 
         swaptotal: 0,
@@ -134,20 +150,25 @@ function mem(callback) {
             result.free = result.free ? result.free * 1024 : os.freemem();
             result.used = result.total - result.free;
 
-            let buffers = parseInt(util.getValue(lines, 'buffers'), 10);
-            buffers = buffers ? buffers * 1024 : 0;
-            let cached = parseInt(util.getValue(lines, 'cached'), 10);
-            cached = cached ? cached * 1024 : 0;
-            result.buffcache = buffers + cached;
+            result.buffers = parseInt(util.getValue(lines, 'buffers'), 10);
+            result.buffers = result.buffers ? result.buffers * 1024 : 0;
+            result.cached = parseInt(util.getValue(lines, 'cached'), 10);
+            result.cached = result.cached ? result.cached * 1024 : 0;
+            result.slab = parseInt(util.getValue(lines, 'slab'), 10);
+            result.slab = result.slab ? result.slab * 1024 : 0;
+            result.buffcache = result.buffers + result.cached + result.slab;
 
-            result.available = parseInt(util.getValue(lines, 'memavailable'), 10);
-            result.available = result.available ? result.available * 1024 : os.freemem();
+            let available = parseInt(util.getValue(lines, 'memavailable'), 10)
+            result.available = available ? available * 1024 : result.buffers + result.cache + result.free + result.slab
+            // result.available = result.available ? result.available * 1024 : os.freemem();
 
             // result.active = result.total - result.free - result.buffcache;
 
-            result.active = parseInt(util.getValue(lines, 'active'), 10);
-            result.active = result.active ? result.active * 1024 : 0;
-            result.buffcache = result.total - result.free - result.active;
+            // result.active = parseInt(util.getValue(lines, 'active'), 10);
+            // result.active = result.active ? result.active * 1024 : 0;
+            // result.buffcache = result.total - result.free - result.active;
+
+            result.active = result.total - result.available;
 
             result.swaptotal = parseInt(util.getValue(lines, 'swaptotal'), 10);
             result.swaptotal = result.swaptotal ? result.swaptotal * 1024 : 0;